c++ - 涉及函数的C++程序...请帮助我

Question

我很难处理两个函数。以下是项目说明:

作业:编写一个程序，在数周内跟踪两个相邻房屋中的蟑螂数量。房屋中蟑螂的数量将由以下因素决定:

1. 每个房子的蟑螂初始数量是 10 到 100 之间的随机数。
2. 每周，蟑螂的数量都会增加 30%。
3. 这两所房子共用一堵墙，蟑螂可能会通过这堵墙从一所房子迁移到另一所房子。在给定的一周内，如果一所房子的蟑螂多于另一所，则蟑螂会从人口较多的房子迁移到人口较少的房子。具体来说，30% 的人口差异(向下舍入)会迁移。
4. 灭虫人员每四个星期拜访其中一所房子，结果该房子里的蟑螂数量减少了 90%(四舍五入)。

这是我的代码:

#include <iostream>
#include <cmath>
using namespace std;

int house, increase, roaches, moreRoaches, fewerRoaches, filthyBeasts, change; // My variables for my four functions
int initialCount(int house);
int weeklyIncrease(int increase);
double roachesMigration(int moreRoaches, int fewerRoaches, int change);
int exterminationTime (int filthyBeasts);
// My four function prototypes 

int main()
{
    int houseA, houseB;

    houseA = initialCount(houseA); //Initializing the initial count of House A.
    houseB = initialCount(houseB); //Initializing the initial count of House B.

    int week = 0;
    for (week = 0; week < 11; week++) // My for loop iterating up to 11 weeks.
    {
        houseA = weeklyIncrease(houseA);
        houseB = weeklyIncrease(houseB);

        cout << "For week " << week << ", the total number of roaches in House A is " << houseA << endl;
        cout << "For week " << week << ", the total number of roaches in House B is " << houseB << endl;

        if((houseA > houseB)) // Migration option 1
        {
            roachesMigration(moreRoaches, fewerRoaches, change);
        }
        else if((houseB > houseA)) // Migration option 2
        {
            roachesMigration(moreRoaches, fewerRoaches, change);
        }


        if ((week + 1) % 4 == 0) // It's extermination time!
        {
            if ((rand() % 2) == 0) // Get a random number between 0 and 1.
            {
                houseB = exterminationTime(houseB);
            }
            else
            {
                houseA = exterminationTime(houseA);                   
            }
        }
    }

    return 0;
}

int initialCount(int house) // Initializing both houses to random numbers between 10 and 100.
{
    int num;
    num = (rand() % 91) + 10;
    return num;
}

int weeklyIncrease(int increaseHouses) // Increasing the roaches in both houses by 30% weekly.
{
    int increase = 0;
    increase = (increaseHouses * .3) + increaseHouses;
    return increase;
}

double roachesMigration(int moreRoaches, int fewerRoaches, int change)
{
    more -= change;
    fewer += change;   
    change = ((more - fewer) * .3);
    return change; 
}


int exterminationTime(int filthyBeasts) // Getting rid of the filthy little beasts!
{
    filthyBeasts = (filthyBeasts * .1);
    return filthyBeasts;
}

问题在于迁移和灭绝功能。我的代码运行良好，但在第 4 周和第 8 周，随机选择的房子应该被消灭，那所房子里的蟑螂数量应该比前一周减少 90%。你们认为我应该怎么做才能纠正这些问题？我真的需要我能得到的所有帮助!

Answer 1

关于这一行:

roachesMigration(change);

change 未在您的 main 函数中声明，因此出现错误。此外，roachesMigration 函数需要 3 个参数，而不是 1 个。